[PC] [Possibly 1990s or early 2000s] 2D fantasy game with a witch on a broom and enemies slowly approaching the player

I'm trying to identify a PC game I played as a child. The game may have been released in the late 1990s or early 2000s, but I'm not sure.

Here is everything I remember:

- The game had a 2D side view, somewhat similar to Terraria's camera perspective.

- The graphics were pixel-art or at least retro-looking.

- The setting was fantasy-themed with various monsters.

- One enemy I clearly remember was a flying witch riding a broom.

- At least one area was a bright green field with hills and trees.

- There were many different types of monsters and multiple weapons or attacks that could be used against them.

- At the bottom of the screen there was a UI panel with icons/buttons. It reminded me of the interface in Warcraft.

- The gameplay was mostly mouse-focused. I may also have been able to move using the arrow keys, but I'm not certain.

- I don't remember any jumping.

One detail I remember quite clearly:

The enemies did not constantly walk toward the player. Instead, they would move closer, stop for a while, then move closer again. While stopped, their idle animations continued. For example, the witch would keep floating up and down on her broom. If the enemies were not killed in time, they would eventually reach the player.

Another detail:

After most of the enemies on the current screen were defeated, the camera and the player character would move to the right together, revealing a new section of the level with new enemies. Then the camera would stop again while the next group of enemies was fought.

I don't remember what the main character looked like, and some details may be inaccurate because I played the game a long time ago.

I've already checked games such as Little Fighter 2, The Last Stand, Age of War, Rogue Legacy, and Cursed Treasure, and it wasn't any of those.

Does this sound familiar to anyone?